74663417021 has 4 divisors (see below), whose sum is σ = 74693684352. Its totient is φ = 74633149692.

The previous prime is 74663416987. The next prime is 74663417041. The reversal of 74663417021 is 12071436647.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12071436647 = 2039 ⋅5920273.

It is a cyclic number.

It is not a de Polignac number, because 74663417021 - 2⁶ = 74663416957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74663417021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74663417041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15129965 + ... + 15134898.

It is an arithmetic number, because the mean of its divisors is an integer number (18673421088).

Almost surely, 2^74663417021 is an apocalyptic number.

It is an amenable number.

74663417021 is a deficient number, since it is larger than the sum of its proper divisors (30267331).

74663417021 is a wasteful number, since it uses less digits than its factorization.

74663417021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30267330.

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 74663417021 in words is "seventy-four billion, six hundred sixty-three million, four hundred seventeen thousand, twenty-one".